更新: Xcode 8.2.1•Swift 3.0.2或更高版本

您需要将其转换为毫秒数除以1000:

You need to convert it from milliseconds dividing it by 1000:

let epochTime = TimeInterval(1429162809359) / 1000
let date = Date(timeIntervalSince1970: epochTime)   // "Apr 16, 2015, 2:40 AM"

print("Converted Time \(date)")         // "Converted Time 2015-04-16 05:40:09 +0000\n"